View of Y Wyddfa

Prepare for a challenging road cycling adventure through the dramatic landscapes of Eryri (Snowdonia) National Park. This difficult 66.7-mile (107.3 km) loop demands very good fitness, featuring a substantial 4677 feet (1425 metres) of elevation gain over approximately 5 hours and 26 minutes. You will experience towering mountains, deep valleys, and forests, with expansive views of glacial valleys and craggy canyons. As you ride, you might catch glimpses of Snowdon and views across the Menai Strait towards Anglesey, all while navigating a mix of well-paved surfaces and more demanding sections.

This hard road ride is best suited for experienced cyclists with very good fitness levels. While the route largely features well-paved roads, be prepared for varied terrain including challenging climbs and sweeping descents. The starting point in Betws-y-Coed, known as a gateway to Snowdonia, offers a convenient base for your journey. Ensure your bike is in excellent condition and you carry enough supplies for the duration of this demanding loop.

This loop offers an immersive journey through the heart of Snowdonia, connecting the bustling hub of Betws-y-Coed with the historic town of Caernarfon, famous for its UNESCO World Heritage castle. The route showcases the diverse beauty of the national park, from coastal proximity near Caernarfon to dramatic inland mountain passes. Its length and difficulty make it a rewarding endeavor for those seeking a significant challenge amidst some of Wales' most stunning natural scenery.

Embark on the Drws y Coed from Caernarfon loop, a moderate road cycling adventure spanning 23.1 miles (37.1 km) with an elevation gain of 1307 feet (398 metres). You can expect to complete this route in about 1 hour and 40 minutes. The ride offers stunning views of peaks like Snowdon, Mynydd Mawr, and Craig Cwm Silyn, with mountains visible in all directions, and you will pass by Llyn Cwellyn. The section along the B4418 is a quiet, undulating road that showcases the area's natural beauty.

This route starts conveniently from Slate Quay in Caernarfon, close to the historic Caernarfon Castle, and initially follows parts of the Lôn Eifion cycle track. While mostly on well-paved surfaces, be aware that some segments might be unpaved or rough, including a section through a farm. The Drws y Coed climb itself has a deceptive average gradient of 3.3% over 4.3 kilometers, with the final part reaching a maximum gradient of 12.4%, so be prepared for a challenging finish.

What makes this loop particularly special is its blend of accessible challenge and exceptional natural beauty. The Drws y Coed climb is known as one of Wales' most scenic road cycling climbs, offering two miles of gentle riding through a towering valley before the steeper ascent. The roads are generally quiet, allowing you to fully enjoy the surroundings. You also have the option to visit the Pant Du vineyard between Talysarn and Penygroes, which features a café and shop open seasonally.